Monosyllabic Chinese word recognition test materials included four blocks of 25 Chinese words. For each speech recognition test, 50 words were selected resulting in a set of 50 tokens. After a monosyllabic Chinese word was displayed, the participants were asked to write down the word. Four different sets of open-set tests were generated for each speech recognition test. Disyllabic Chinese spondee-word recognition test materials included two blocks of Chinese spondee-words, each block containing 36 Chinese spondee-words. For each speech recognition test, one block was selected resulting in a set of 36 tokens. After a Chinese spondee-word was displayed, the participants were asked to write down the word. Four different sets of open-set test were generated via changing the order of the materials for each speech recognition test.